[SOLVED] CS /* Verifies that overlapping memory mappings are disallowed. */

/* Verifies that overlapping memory mappings are disallowed. */

#include
#include tests/vm/sample.inc
#include tests/lib.h
#include tests/main.h

void
test_main (void)
{
char *start = (char *) 0x10000000;
int fd[2];

CHECK ((fd[0] = open (zeros)) > 1, open zeros once);
CHECK (mmap (fd[0], start) != MAP_FAILED, mmap zeros);
CHECK ((fd[1] = open (zeros)) > 1 && fd[0] != fd[1],
open zeros again);
CHECK (mmap (fd[1], start + 4096) == MAP_FAILED,
try to mmap zeros again);
}